Because if they'd voted the other way, the balance would have tilted seriously against the Union, and if Maryland had gone Confederate, Washington DC would have been totally surrounded by enemy states.
cananda
The states that make Florida's northern border are southeastern Alabama and southern/southeastern Georgia.
North Dakota and South Dakota touch its northern border.
The states that lie along the northern border of the southwest region of the United States are Colorado, Utah, and Nevada.
Because if they'd voted the other way, the balance would have tilted seriously against the Union, and if Maryland had gone Confederate, Washington DC would have been totally surrounded by enemy states.
Kansas and Colorado touch Oklahoma's northern border.
On its northern border.
border states are states that were left in the union but stil had slavery.
plattsburgh
There are five states that do not border the United States: Alaska, Hawaii, Puerto Rico, Guam, and the Northern Mariana Islands.
Rio Grande forms the Southern border of the United states.
No two US states share a northern border with Maine.